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Is t^(1/2) an even integer? (1) t is equal to m^2. (2) m is an even in

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Math Expert
Joined: 02 Sep 2009
Posts: 43334

Kudos [?]: 139595 [0], given: 12794

Is t^(1/2) an even integer? (1) t is equal to m^2. (2) m is an even in [#permalink]

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10 Dec 2017, 00:09
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85% (00:22) correct 15% (00:00) wrong based on 13 sessions

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Is $$\sqrt{t}$$ an even integer?

(1) t is equal to m^2.
(2) m is an even integer.
[Reveal] Spoiler: OA

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Kudos [?]: 139595 [0], given: 12794

PS Forum Moderator
Joined: 25 Feb 2013
Posts: 817

Kudos [?]: 382 [0], given: 42

Location: India
GPA: 3.82
Re: Is t^(1/2) an even integer? (1) t is equal to m^2. (2) m is an even in [#permalink]

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10 Dec 2017, 02:46
Bunuel wrote:
Is $$\sqrt{t}$$ an even integer?

(1) t is equal to m^2.
(2) m is an even integer.

Statement 1: $$t=m^2 => \sqrt{t}=\sqrt{m^2}$$. Nothing given about $$m$$. Insufficient

Statement 2: nothing given about $$t$$. Insufficient

Combining 1 & 2, as $$m$$ is even so $$m^2$$ is even, hence $$\sqrt{t}$$=even. Sufficient

Option C

Kudos [?]: 382 [0], given: 42

Re: Is t^(1/2) an even integer? (1) t is equal to m^2. (2) m is an even in   [#permalink] 10 Dec 2017, 02:46
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